Deno Skills

Why it's ranked here

The project combines unusually concrete operational guidance with automated checks against documentation decay. It teaches incremental migration instead of demanding rewrites, distinguishes npm compatibility from Deno-specific permissions, and verifies commands and selected TypeScript examples. Coverage is incomplete, however, because only two skill sets receive full snippet verification.

What's good

The migration guidance is practical and reversible: adopt Deno first as a package manager, then runtime, then tighten permissions, and only optionally replace existing tools. It also names common failure modes, explains lifecycle-script approval, preserves lockfile pins, and recommends narrowly scoped access grants.

Tradeoffs

The guidance targets Deno 2.9 or newer, so it is not designed for older installations. Automated snippet checking currently covers only the core and migration skills. Frontend, deployment, and sandbox material contains project-dependent fragments that the verifier explicitly skips.

How to use it well

Install the complete bundle for teams regularly maintaining Deno applications, or select one skill for a focused migration or deployment task. It fits assistants that support the Agent Skills specification. Keep framework documentation nearby for ordinary React, Svelte, or similar APIs, and use platform-specific guidance for non-Deno deployment or isolation systems.

Observed

License

MIT License

Primary content

Markdown skill documents, supported by a TypeScript verification script

Packaging

Agent Skills specification packages plus a Claude Code plugin and marketplace entry

Install surface

Plugin commands, npx skills, or manual directory copying

Supported assistants

Claude Code, Cursor, VS Code with GitHub Copilot, and other Agent Skills-compatible assistants

Verification scope

Command validation and TypeScript snippet checking cover the core Deno and migration skills